define('bgPos/1.0.2/jquery.bgPos', ['$'], function (require) {
	var jQuery = require('$');
	/**
	 * @author Alexander Farkas
	 * v. 1.02
	 * @modifed Mark Zhao
	 */
	/**
	 * @author Alexander Farkas
	 * v. 1.02
	 *
	 * Edited by Nelson Wells for jQuery 1.8 compatibility
	 */
	(function($) {
		$.extend($.fx.step,{
			backgroundPosition: function(fx) {
				if (fx.pos === 0 && typeof fx.end == 'string') {
					var start = $.css(fx.elem,'backgroundPosition');
					start = toArray(start);
					fx.start = [start[0],start[2]];
					var end = toArray(fx.end);
					fx.end = [end[0],end[2]];
					fx.unit = [end[1],end[3]];
				}
				var nowPosX = [];
				nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
				nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];
				fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];

				function toArray(strg){
					strg = strg.replace(/left|top/g,'0px');
					strg = strg.replace(/right|bottom/g,'100%');
					strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
					var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
					return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
				}
			}
		});
	})(jQuery);

})